Acting
John Dennis Johnston (born May 14, 1950) is an American film and television actor.
Supernatural
2005
Married... with Children
1987
ER
1994
Without a Trace
2002
MacGyver
1985
Knots Landing
1979
The A-Team
1983
Murder, She Wrote
1984
The Rockford Files
1974
St. Elsewhere
1982
Charlie's Angels
1976
Emergency!
1972
Highlander: The Series
1992
The Golden Girls
Matlock
1986
T. J. Hooker
Dark Angel
2000
Millennium
1996
In Plain Sight
2008
Southland
2009
